print ("I will now count my chickens:")   # 准备计算鸡的数量

print ("Hens", 25 + 30 / 6)     # 计算母鸡数量
print ("Roosters", 100 - 25 * 3 % 4)  # 计算公鸡数量

print ("Now I will count the eggs:")    # 计算鸡蛋数量

print (3 + 2 + 1 - 5 + 4 % 2 - 1 / 4 + 6)   #1+0-0.25+6=6.75

print ("Is it true that 3 + 2 < 5 - 7?")    # 5小于-2对么

print (3 + 2 < 5 - 7)    # 等式不为真

print ("What is 3 + 2?", 3 + 2)    # 3+2等于多少？等于5
print ("What is 5 - 7?", 5 - 7)    # 5-7等于多少？等于-2

print ("Oh, that's why it's False.")     # 知道错的原因了

print ("How about some more.")     # 再看看其它的计算

print ("Is it greater?", 5 > -2)    # 5比-2大
print ("Is it greater or equal?", 5 >= -2)    #5比-2大
print ("Is it less or equal?", 5 <= -2)    #5不必-2小

print ("浮点数计算一次")
print ("I will now count my chickens:")   # 准备计算鸡的数量

print ("Hens", 25.0 + 30 / 6)     # 计算母鸡数量
print ("Roosters", 100.0 - 25 * 3 % 4)  # 计算公鸡数量

print ("Now I will count the eggs:")    # 计算鸡蛋数量

print (3 + 2 + 1 - 5 + 4 % 2 - 1 / 4 + 6)   #1+0-0.25+6=6.75

print ("Is it true that 3 + 2 < 5 - 7?")    # 5小于-2对么

print (3 + 2 < 5 - 7)    # 等式不为真

print ("What is 3 + 2?", 3.0 + 2)    # 3+2等于多少？等于5
print ("What is 5 - 7?", 5.0 - 7)    # 5-7等于多少？等于-2

print ("Oh, that's why it's False.")     # 知道错的原因了

print ("How about some more.")     # 再看看其它的计算

print ("Is it greater?", 5.0 > -2)    # 5比-2大
print ("Is it greater or equal?", 5.0 >= -2)    #5比-2大
print ("Is it less or equal?", 5.0 <= -2)    #5不必-2小
